As the curatorial chair of Boston ARTcetera 2018, Olivia Ives-Flores has pulled together over 200 contemporary artworks to be auctioned on Oct. 27 at 7:30 p.m. at a Rafanelli Events-designed affair. This biennial extravaganza supports the AIDS Action Committee, New England’s largest provider of services to people living with HIV/AIDS and populations at risk of infection. If you prefer to contribute from afar, bid online on Paddle 8 at paddle8.com/auction/artcetera through Oct. 26. ARTcetera, $350 at The Castle at Park Plaza, 130 Columbus Ave., Boston. For more infomation, call 857-313-6735 or visit artceteraboston.org.